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QUESTION
What is the area and circumference of of circle with diameter 10 inches?
The area of circle is ##314.16## square inches and
circumference is ##62.832## inches.
Area of a circle with radius ##r## is given by ##pir^2## and circumference is given by ##2pir##, where ##pi## is roughly equal to ##3.1416##
As the radius is ##10## inches,
The area of circle is ##3.1416xx10^2=314.16## square inches
and circumference is ##2xx3.1416xx10=62.832## inches.
